-76.91% is the change from 641 to 148
Calculation steps:
[( 148 - 641 ) ÷ 641] x 100 = -76.91%
Formula
Percentage change = [(148 - 641) / 641] x 100
Subtract the new number by the original number
148 - 641 = -493
-493 ÷ 641 = -0.7691107644305772
-0.7691107644305772 x 100 = -76.91%